Helicon Node Sample App

This repository contains the files required to run the Helicon Node Quickstart.

Helicon is a simple, scalable, robust, code-free and generic platform to enable and productise the next generation of "online modified", real-time event stream ML/AI models.

Set up the project

Project can be setup with those simple steps:

1. locally download the repository
2. install the necessary dependencies with npm install (or any package manager you prefer, like yarn or pnpm).

Sample App

Publish

publish operations can be performed by using the HeliconWriteClient class exported by the library.

To initialize a new HeliconWriteClient instance, the user is tasked to fill all the required parameters of the constructor such as:

• The address where the GRPC Host is located
• The port to which the GRPC Host is binded
• The rest of the authentication parameters such as Client Secret, clientId and Tenant

Each of these parameters can be found (pre-filled) in the "Setup" section of a newly created stream.

After a HeliconWriteClient has been initialized, the user can send data to the stream thanks to the write(streamName, payload) method; An usage example is shown below:

const { HeliconWriteClient } = require("@radicalbit/helicon-node-sdk");

const host = "<host>";
const port = 443;
const clientId = "<client-id>";
const clientSecret = "<client-secret>";
const tenant = "<tenant-name>";

const payload = {
	"name": "record",
	"temperature": 29
};

const heliconWriteClient = new HeliconWriteClient(host, clientId, clientSecret, tenant, port);

Subscribe

subscribe operations can be performed by using the HeliconSubscribeClient class exported by the library.

To initialize a new HeliconSubscribeClient instance, the user is tasked to fill all the required parameters of the constructor such as:

• The address where the GRPC Host is located
• The port to which the GRPC Host is binded
• The rest of the authentication parameters such as Client Secret, clientId and Tenant

Each of these parameters can be found (pre-filled) in the "Setup" section of a newly created stream.

After a HeliconSubscribeClient has been initialized, the user can receive the events from the stream thanks to the subscribe(streamDisplaName) method; An usage example is shown below:

const { HeliconSubscribeClient } = require("@radicalbit/helicon-node-sdk");

const host = "<host>";
const port = 443;
const clientId = "<client-id>";
const clientSecret = "<client-secret>";
const tenant = "<tenant-name>";

const heliconSubscribeClient = new HeliconSubscribeClient(host, clientId, clientSecret, tenant, port);

heliconSubscribeClient.subscribe("<streamName>").onData(
  (data) => console.log(data)
);

How to Run the app

If you want to run the app locally, you will need to:

1. fill the necessary authentication details in publish.js or subscribe.js.
2. Run the examples with npm run start:publish or npm run start:subscribe (you can use yarn or pnpm too)

Change the API version

The main branch is always updated with the latest version of Helicon API.

If you need to use an old version of the Helicon's API, you can switch between the project version using git checkout tag_version.

You can refer to Helicon documentation for looking more in the depth over the version's features.

Support

We're always happy to help with any other questions you might have! Send us an email.